Paradyne 7112 manual Worst Interval

Monitoring the DSU/CSU

HBursty Errored Seconds (BES) ±The number of bursty errored seconds for the current interval. A bursty errored second is any second with more than one, but less than 320, CRC errors. The maximum is 900 seconds.

HControlled Slip Seconds (CSS) ± The number of controlled slip seconds for the current interval.

HLoss of Frame Count (LOFC) ± The loss of frame count for the current interval. This is a count of the number of times that an LOF is declared. The maximum count is 255.

A Telco set and a user set are kept for each of the above statistics. The user set is a copy of the Telco set, but the user set can be cleared.

In addition to the statistics kept for the network interface, the system maintains a Status register for each interval (far-right column). The Status register shows whether or not the following events have occurred at least once within the

15-minute interval:

HY ± Yellow Alarm

HL ± Loss of Signal

HE ± Excessive Error Rate

HF ± Frame Synchronization Bit Error

HV ± Line Code Violation

Hnone

Every 15 minutes, the current interval's data is rolled over into a set of accumulator registers that represent the previous 96 15-minute intervals for the register. All counts show the number of occurrences since the last reset of the counters.

When you enter the Network Performance Statistics screen, the current interval and seven most recent intervals are displayed. To display other intervals:

HUse the PgUp and PgDn selections. Intervals display as a series of 7 consecutive periods (recent to old).

HTab to one of the rows in the interval table that has an underlined interval number (intervals 1, 4, and 7 when first displayed). Type the number of the interval you want to display at any of these three underlined locations. Intervals are numbered from 1 (most recent) to 96 (oldest). For example:

ÐEnter 10 on the top line to display intervals 10 through 17.

ÐEnter 10 on the middle line to display intervals 7 through 13.

ÐEnter 10 on the bottom line to display intervals 4 through 10.

Worst Interval

To assist you in selecting trouble spots, a Worst Interval is also displayed. The Worst Interval is the 15-minute period that contains the largest number of seconds for either ES, UAS, SES, BES, or CSS, or the greatest Loss of Frame Count (LOFC). If more than one interval contains the same worst value, then the oldest interval is displayed.

7112-A2-GB20-20 March 1998 6-13